All-sky example useful for timing

[RobertPincus]

Revises the all-sky example to be useful for timing benchmarks. The atmospheric profile more-or-less follows the profile for RCEMIP at a surface temperature of 300 K. Users specify the number of columns and layers and may choose more than a single iteration. (Array checks are turned off for all but the first iteration). A k-distribution must be specified. Clouds are optional, and occupy 2/3 of columns; aerosols in every other column are optional but require clouds.

A netCDF file is produced; small files of {LW,SW}x{clouds, clouds+aerosols} are used for verification during continuous integration. Timing output is simple, i.e.

ncol   nlay   ngpt  clouds aerosols time_per_col_ms nloops time_total_s time_min_s
     2     32    128       0        0           0.978     24        0.047      0.047

Addresses #128

[RobertPincus]

Also: removes use of NCHOME environment variable, removes (optional) use of GPTL timing library in RFMIP examples.

[Chiil]

Design is great, tools works well. Compile and test sequence fails on my workstation because files are not adequately copied to reference in allsky test:

FileNotFoundError: [Errno 2] No such file or directory: '/home/chiel/devel/rte-rrtmgp/rrtmgp-data/examples/all-sky/reference/rrtmgp-allsky-lw-no-aerosols.nc'
make[1]: *** [Makefile:61: check] Error 1
make[1]: Leaving directory '/home/chiel/devel/rte-rrtmgp/examples/all-sky'

I only have a rrtmgp-allsky-no-aerosols.nc

[RobertPincus]

@Chiil Thanks for the feedback. Did you check out branch feature-timing of the data repo as well?

[Chiil]

I use the default branch of the data, I merged the test into my cuda branch.On 2 Jul 2023, at 01:37, Robert Pincus @.***> wrote: @Chiil Thanks for the feedback. Did you check out branch feature-timing of the data repo as well?

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[RobertPincus]

@Chiil If you check out the feature-timing branch of the data repo, do you find all the data there that enables you to run the tests?